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[/] [open8_urisc/] [trunk/] [VHDL/] [o8_epoch_timer.vhd] - Diff between revs 189 and 191

Rev 189	Rev 191
Line 107...	Line 107...
`epoch_alarm_q <= '0';`	`epoch_alarm_q <= '0';`
`Wr_Data_q <= (others => '0');`	`Wr_Data_q <= (others => '0');`
`Reg_Addr_q <= (others => '0');`	`Reg_Addr_q <= (others => '0');`
`Wr_En <= '0';`	`Wr_En <= '0';`
`Rd_En <= '0';`	`Rd_En <= '0';`
`Rd_Data <= (others => '0');`	`Rd_Data <= OPEN8_NULLBUS;`
`Interrupt <= '0';`	`Interrupt <= '0';`
`elsif( rising_edge( Clock ) )then`	`elsif( rising_edge( Clock ) )then`
`epoch_tmr <= epoch_tmr + uSec_Tick;`	`epoch_tmr <= epoch_tmr + uSec_Tick;`
`-- Force the lower bits of the setpoint to "11" so that the offset is`	`-- Force the lower bits of the setpoint to "11" so that the offset is`
`-- reduced to 1uS (reproducing the original behavior). Software should`	`-- reduced to 1uS (reproducing the original behavior). Software should`
Line 155...	Line 155...

`epoch_alarm_q <= epoch_alarm;`	`epoch_alarm_q <= epoch_alarm;`
`-- Fire on rising edge of epoch_alarm`	`-- Fire on rising edge of epoch_alarm`
`Interrupt <= epoch_alarm and not epoch_alarm_q;`	`Interrupt <= epoch_alarm and not epoch_alarm_q;`

`Rd_Data <= (others => '0');`	`Rd_Data <= OPEN8_NULLBUS;`
`Rd_En <= Addr_Match and Rd_Enable;`	`Rd_En <= Addr_Match and Rd_Enable;`
`if( Rd_En = '1' )then`	`if( Rd_En = '1' )then`
`case( Reg_Addr_q )is`	`case( Reg_Addr_q )is`
`when "00" =>`	`when "00" =>`
`Rd_Data <= epoch_buffer(7 downto 0);`	`Rd_Data <= epoch_buffer(7 downto 0);`